X-Message-Number: 2460
Date: 14 Nov 93 07:21:20 EST
From: Mike Darwin <>
Subject: CRYONICS Noisy Dewars

In my little discourse on infectious disease I forgot to mention an
interesting fact which I have never seen mentionmed elsewhere: it is noisy
inside cryogenic dewars.  In fact, it sounds like the ocean or listening
to an open sodo can up close.  In short, while stratification in the
liquid no doubt does occur, do not forget that liquid nitrogen in a dewar
is a slowly BOILING liquid.  It is NOT evaporating it is BOILING, albeit
weakly.

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